package servlets.module.lesson;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import utils.ShepherdLogManager;
import utils.Validate;

/**
 * CSRF Lesson module Target - Does not return result key <br>
 * <br>
 * This file is part of the Security Shepherd Project.
 *
 * <p>The Security Shepherd project is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.<br>
 *
 * <p>The Security Shepherd project is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU General Public License for more details.<br>
 *
 * <p>You should have received a copy of the GNU General Public License along with the Security
 * Shepherd project. If not, see <http://www.gnu.org/licenses/>.
 *
 * @author Mark Denihan
 */
public class CsrfLessonTarget extends HttpServlet {

  private static final long serialVersionUID = 1L;
  private static final Logger log = LogManager.getLogger(CsrfLesson.class);

  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    // Setting IpAddress To Log and taking header for original IP if forwarded from proxy
    ShepherdLogManager.setRequestIp(request.getRemoteAddr(), request.getHeader("X-Forwarded-For"));
    log.debug("Cross-Site Request Forgery Lesson Target Servlet");

    // Translation Stuff
    Locale locale = new Locale(Validate.validateLanguage(request.getSession()));
    ResourceBundle bundle = ResourceBundle.getBundle("i18n.servlets.lessons.csrfLesson", locale);

    PrintWriter out = response.getWriter();
    out.print(getServletInfo());
    try {
      HttpSession ses = request.getSession(true);
      if (Validate.validateAdminSession(ses)) {
        ShepherdLogManager.setRequestIp(
            request.getRemoteAddr(),
            request.getHeader("X-Forwarded-For"),
            ses.getAttribute("userName").toString());
        log.debug("Current User: " + ses.getAttribute("userName").toString());
        log.debug("CSRF Lesson Target Hit By Admin");
        out.write("<p>" + bundle.getString("target.success") + "</p>");
      } else {
        log.debug("CSRF Lesson Target Hit");
        out.write("<p>" + bundle.getString("target.notAdmin") + "</p>");
      }
    } catch (Exception e) {
      log.error("CsrfLessonTarget Error: " + e.toString());
    }
  }
}
